Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 4 of 4
  1. 20th August 2009, 10:00 AM #1
    Santalum's Avatar
    Santalum
    Santalum is offline Senior Member
    Join Date
    Apr 2005
    Location
    South Australia
    Age
    81
    Posts
    131

    Default Angles for octagon?

    Morning all,
    I need to build a small octagonal frame, sides approx 30cm (70 x 35 pine) for a project I'm working on, the question is what angles do I need to cut to achieve a butt jointed octagon

    Cheers,
    Jon.
    Jon.
    Reply With Quote Reply With Quote
  2. 20th August 2009 10:00 AM # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Age
    2010
    Posts
    Many





     
  3. 20th August 2009, 10:06 AM #2
    watson's Avatar
    watson
    watson is offline Deceased
    Join Date
    Sep 2006
    Location
    Avoca Victoria
    Age
    81
    Posts
    10,501

    Default

    G'day Jon,
    Formula as follows:

    360º/8 = 45º
    45º/2 = 22.5º

    Hope that helps
    Reply With Quote Reply With Quote
  4. 20th August 2009, 12:14 PM #3
    Santalum's Avatar
    Santalum
    Santalum is offline Senior Member
    Join Date
    Apr 2005
    Location
    South Australia
    Age
    81
    Posts
    131

    Default

    Thanks Noel, think it may well be what I'm after, will give it a go and let you know.
    Cheers,
    Jon.
    Quote Originally Posted by watson View Post
    G'day Jon,
    Formula as follows:

    360º/8 = 45º
    45º/2 = 22.5º

    Hope that helps
    Jon.
    Reply With Quote Reply With Quote
  5. 21st August 2009, 11:04 AM #4
    Al B's Avatar
    Al B
    Al B is offline GOLD MEMBER
    Join Date
    May 2004
    Location
    Epping.Vic
    Age
    58
    Posts
    1,094

    Default

    Hi Jon

    You may find these helpful to you also

    Go to the last post (5) by Timbernut and open the attachment https://www.woodworkforums.com/f11/calculating-coopering-angles-stock-thickness-67840


    Blocklayer also has a Polygon Calculator here http://www.visualtrig.com/Polygons.aspx
    Regards
    Al .

    You don't know, what you don't know, until you know it.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. HSS Tool Angles, - Angles? What angles??
    By Kody in forum METALWORK FORUM
    Replies: 1
    Last Post: 6th December 2008, 08:07 AM
  2. inlayed octagon coffee table
    By gristleburger in forum WOODWORK PICS
    Replies: 9
    Last Post: 4th August 2006, 12:28 PM
  3. Cutting jig for a few angles
    By Bob38S in forum HOMEMADE TOOLS AND JIGS ETC.
    Replies: 3
    Last Post: 27th April 2006, 04:39 PM
  4. Stool leg angles
    By jetman in forum WOODWORK - GENERAL
    Replies: 0
    Last Post: 27th February 2006, 08:40 AM
  5. Ned Iron L or T shape rails to support Octagon Deck
    By barrysumpter in forum WOODWORK - GENERAL
    Replies: 6
    Last Post: 25th November 2001, 06:43 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules